APL5331

Provide Bi-direction Current - Sourcing or Sinking Current up to 3A
1.25V/0.9V Output for DDR I/II Applications
Fast Transient Response
High Output Accuracy - ±20mV over Load, VOUT Offset andTemperature
Adjustable Output Voltage by External Resistors
Current-Limit Protection
On-Chip Thermal Shutdown
Shutdown for Standby or Suspend Mode
Simple SOP-8, SOP-8-P with thermal pad, TO-252- 5 and TO-263-5 Packages

On-chip thermal shutdown provides protection against any combination of overload that would create ex-cessive junction temperature. The output voltage of APL5331 track the voltage at VREF pin. A resistor divider connected to VIN, GND and VREF pins is used to provide a half voltage of VIN to VREF pin. In addition, an external ceramic capacitor and an open-drain transistor connected to VREF pin provides soft-start and shutdown control respectively. Pulling and holding the VREF to GND shuts off the output. The output of APL5331 will be high impedance after be-ing shut down by VREF or thermal shutdown function.